如何使用dict ["key"]中的值替换在Strings中用{key}标记的关键字

Question

我想写一个带字符串和字典的方法.该方法应扫描字符串并将{word}内的每个单词替换为dic ["word"]的值.

例:

s = "Hello my name is {name} and I like {thing}"
dic = {"name": "Mike", "thing": "Plains"}

def rep(s, dic):
   return "Hello my name is Mike and I like Plains"

我的意思是它是一个简单的问题,易于解决,但我搜索了很好的python方式.

Answer 1

您可以dict在str.format函数内解压缩为:

>>> s = "Hello my name is {name} and I like {thing}"
>>> dic = {"name": "Mike", "thing": "Plains"}

#             v unpack the `dic` dict
>>> s.format(**dic)
'Hello my name is Mike and I like Plains'

要了解如何在Python中解压缩,请检查:**(双星)和*(星)对参数的作用是什么？